/Engine/Plugins/Experimental/PCG/Source/PCG/Public/InstanceDataPackers/PCGInstanceDataPackerByAttribute.h
virtual void PackInstances_Implementation ( [FPCGContext](API\Plugins\PCG\FPCGContext) & Context, const [UPCGSpatialData](API\Plugins\PCG\Data\UPCGSpatialData) * InSpatialData, const [FPCGMeshInstanceList](API\Plugins\PCG\MeshSelectors\FPCGMeshInstanceList) & InstanceList, [FPCGPackedCustomData](API\Plugins\PCG\InstanceDataPackers\FPCGPackedCustomData) & OutPackedCustomData ) const